Adds some testing

tests/test_wallpaper.py

@@ -0,0 +1,16 @@
+from pokemonterminal.wallpaper import _get_adapter_classes
+import os.path as __p
+import inspect as __inspct
+
+
+def test_wallpaper_adapter_classes():
+    all_adapter = _get_adapter_classes()
+    files = {__inspct.getfile(x) for x in all_adapter}
+    print('all adapter classes:\n', files)
+    assert len(all_adapter) >= len(files), \
+        "Some of the files in the adapter module don't define an adapter"
+    module_name = {x.__name__: __p.splitext(__p.basename(
+        __inspct.getfile(x)))[0] for x in all_adapter}
+    print("'class: module' map\n", module_name)
+    assert all(y.lower() in x.lower() for x, y in module_name.items()), \
+        "Some of the adapters are defined in unrelated named modules"